Estimation of the deep density distribution in the lithosphere of central and Southern Asia using data about free mantle surface depth |
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| Authors: | V N Senachin A A Baranov |
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| Institution: | 1.Institute of Marine Geology and Geophysics, Far East Division,Russian Academy of Sciences,Yuzhno-Sakhalinsk,Russia;2.Schmidt Institute of Physics of the Earth,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | The results of the selection of a model of the deep density distribution in the lithosphere of Central and Southern Asia,
which explains the previously revealed dependence of the free mantle surface depth on the thickness of the crust Artemjev,
1975], are described. It is shown that this dependence can be caused by variations in the mantle’s density with depth. Models
of the continental and oceanic mantles with an increase in the linear density over depth are selected for the region of Asia.
The level of the free surface depth in the oceanic mantle is higher than in the continental mantle. The observed dependence
on the crustal thickness can also be used for determining nonlinear density variations with depth under the assumption that
lateral density variations in this dependence are of a random character. |
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